Climate averages 1991–2020
Isulan weather
in January.
A hot, wet month: the coolest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Isulan: daytime highs average 29.8°C and nights cool to about 23.4°C. By daytime temperature it is the coolest month of the year.
Expect about 129 mm of rain on roughly 17 days, which makes January a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 47 min on an average January day.
The nearest other city in this atlas is Tacurong (11 km away). In January its highs average 28.5°C, 1.3°C cooler than Isulan, with 230 mm of rain.
Among the 151 cities listed in the Philippines, Isulan ranks joint 4th of 151 for the warmest January highs and 87th of 151 for the driest January (rainfall, lowest first). The mean January high of those 151 cities is 27.8°C; Isulan is 2.0°C warmer than that mean.
From January to February, average highs rise by 0.6°C to 30.4°C, and monthly rainfall falls from 129 mm to 100 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Isulan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 29.8°C23.4°C | 23.4°C | 129 | 16.9 | 11.812 h |
| February | 30.4°C23.6°C | 23.6°C | 100 | 14.2 | 11.912 h |
| March | 31.6°C24.0°C | 24.0°C | 112 | 15.8 | 12.112 h |
| April | 32.5°C24.6°C | 24.6°C | 123 | 18.2 | 12.312 h |
| May | 31.6°C24.5°C | 24.5°C | 225 | 27.1 | 12.412 h |
| June | 30.4°C23.9°C | 23.9°C | 257 | 27.0 | 12.512 h |
| July | 29.9°C23.6°C | 23.6°C | 256 | 26.6 | 12.512 h |
| August | 30.2°C23.6°C | 23.6°C | 214 | 25.1 | 12.312 h |
| September | 30.4°C23.6°C | 23.6°C | 211 | 25.0 | 12.212 h |
| October | 30.2°C23.5°C | 23.5°C | 238 | 26.3 | 12.012 h |
| November | 30.0°C23.4°C | 23.4°C | 171 | 23.1 | 11.812 h |
| December | 30.0°C23.6°C | 23.6°C | 130 | 19.9 | 11.712 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Tacurong in JanuaryPhilippines · 11 kmHigh 28.5°C · Low 22.6°C · 230 mm rain
- Banga in JanuaryPhilippines · 30 kmHigh 28.5°C · Low 22.1°C · 118 mm rain
- Koronadal in JanuaryPhilippines · 30 kmHigh 28.9°C · Low 22.7°C · 118 mm rain
- Surallah in JanuaryPhilippines · 32 kmHigh 28.8°C · Low 22.4°C · 118 mm rain
- Lambayong in JanuaryPhilippines · 50 kmHigh 25.1°C · Low 18.9°C · 155 mm rain
- Tupi in JanuaryPhilippines · 51 kmHigh 28.4°C · Low 21.7°C · 160 mm rain
- Malingao in JanuaryPhilippines · 61 kmHigh 30.9°C · Low 23.2°C · 146 mm rain
- Budta in JanuaryPhilippines · 66 kmHigh 30.6°C · Low 23.3°C · 146 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Isulan) is explained once on the Isulan year overview and on the Sources, method and limits page.